Abstract: The invention provides a three-dimensional negative refraction structure and a manufacturing method thereof. The three-dimensional negative refraction structure includes at least one metal shell. The at least one metal shell is embedded in a substrate or disposed on the substrate. A shape of the at least one metal shell is a three-dimensional symmetrical shape.

Abstract: A transparent conducting electrode using a metamaterial high pass filter includes a substrate and a metal layer. The metal layer is disposed on a surface of the substrate and has a plurality of periodic patterns, wherein the plurality of periodic patterns are interconnected to form a metamaterial structure with subwavelength meshes, and a size of open area of the periodic pattern is smaller than the average wavelength of visible light. The abovementioned transparent conducting electrode using the metamaterial high pass filter has advantages of higher transmittance, conductivity and flexibility and lower process temperature.